Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Chemistry and Pharmacology
The structure of disodium bis[μ-oxo-tri-μ3-oxopentakis(μ-propionato-κO:κO′) tris(propionato-κO)-0.5-chromium-0.5-irontrimolybdenum](3 Mo-Mo), Na2[Cr0.5Fe0.5Mo3O4(C3H5O2)8]2, consists of a centrosymmetric cluster anion, [(EtCO2)8Mo3O4CrFeO4Mo3(O2CEt)8]2−, in which two Mo3O4 units are joined by the Fe and Cr atoms to complete a circular [Mo3O4CrFeO4Mo3]14+ species. Each Na atom is coordinated to five O atoms to form a trigonal bipyramid with an average Na-O distance of 2.32 (2) Å. The anions are connected by Na cations to form a one-dimensional infinite chain structure.
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